MD5简单版的杂凑函数；使用C++语言编写

本文介绍了在JAVA环境下如何实现IDEA对称加密算法。由于电子商务和电子政务的普及，安全加密技术在其中应用非常广泛，对安全加密技术的要求也很高。目前在JAVA环境下实现IDEA加密具有很多的优势，因为JAVA是基于面向对象的编程语言,并且由于它的平台无关性能被大量应用于Internet的开发。-This paper presents the Java environment IDEA how to achieve symmetric encryption algorithm. As e-commerce and e-government popular, security encryption technology, which is widely used for security encryption technology requirements is also high. In Java environment under IDEA encryption has many advantages, because Java is based on object-oriented programming language, and because it is platform independent performance was widely used in Internet development.

这是我上信息安全课做的作业，des的加密算法。-This is my lesson to do on information security operations, des encryption algorithm.

TableCrypt is a file encryption utility. The major difference with most file encryptors is that this program uses a generated table in combination with a password to encrypt a file. This way you need 2 variables to decrypt the file. This is how it works: Generate a 10kb table file and enter a password. The password is used to pick bytes from the table file which in their turn are used to encrypt the bytes of the inputfile with XOR encryption.

数据加密技术之几种算法 sa-faq-1-data encryption technology several algorithms rsa- faq-1

128位(或192或256bit该代码以128为例)的密钥长度和分组长度，数据分组（输入的明文），先进行逐比特异或（AddRoundKey） 运算。然后通过循环十次非线性代换（SubBytes）、行变换（ShiftRows）、列变换（MixColumns）、逐比特异或【最后一轮不进行列变换】 的过程，输出128位（或192或256bit）数据即是密文。这就是加密过程。之后进行之前的逆过程，即可得到明文，此为解密过程。

RC2算法源代码-RC2 algorithm source code

Universal De-embedding Procedure

一个测试DES加密算法和测试程序-a test DES encryption algorithm and testing procedures

pgp加密例子 -pgp encryption example

我写的利用IDEA算法的加密程序，并含文件切割和合并功能。-I write using IDEA algorithm encryption procedures, and documents containing cutting and consolidation functions.